So I have a friend who is a pc who gave me his hp hard drive with simple save, one of those hard drives with software that com pies things automatically. When I plug it in it show up fine and I can look in the folder and I have read write access as you would expect on any hard drive. But when I try to drop stuf in I can't, and I obviously can't reformat it because he needs to use it. Any idea to work around it or what may cause this issue?